161457287039 has 2 divisors, whose sum is σ = 161457287040. Its totient is φ = 161457287038.

The previous prime is 161457287027. The next prime is 161457287059. The reversal of 161457287039 is 930782754161.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 161457287039 - 2¹⁶ = 161457221503 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161457287059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80728643519 + 80728643520.

It is an arithmetic number, because the mean of its divisors is an integer number (80728643520).

It is a 1-persistent number, because it is pandigital, but 2⋅161457287039 = 322914574078 is not.

Almost surely, 2^161457287039 is an apocalyptic number.

161457287039 is a deficient number, since it is larger than the sum of its proper divisors (1).

161457287039 is an equidigital number, since it uses as much as digits as its factorization.

161457287039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2540160, while the sum is 53.

The spelling of 161457287039 in words is "one hundred sixty-one billion, four hundred fifty-seven million, two hundred eighty-seven thousand, thirty-nine".